#include <stdio.h>
int main(){
	int max(int,int);
	int(*p)(int,int);
	int a,b,c;
	p=max;
	printf("please enter a and b:");
	scanf("%d %d",&a,&b);
	c=(*p)(a,b);
	printf("a=%d\nb=%d\nmax=%d\n",a,b,c);
	return 0;
}
int max(int x,int y){
	int z;
	if(x>y) z=x;
	else z=y;
	return z;
}